Improvement in pumps



D. N. B. 60 FF! N, Jr.

umps.

Patented March 24. 1874.

DAVID N. B. OOFFIN, JR, OF NEVTOFT, ASSIGNOR TO HIMSELF AND BEN- JAMINWOODVVARD, OF CAMBRIDGE, MASSACHUSETT S.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 148,809, dated March24, 1874; application filed December 26, 1873.

To all whom it may concern:

Be it known that I, D. N. B. OOFFIN, Jr., f Newton, in the county ofMiddlesex and State of Massachusetts, have invented an Improved PumpingApparatus, of which the following is a specification:

The object of my invention is to provide an improved means for operatingships pumps, especially where necessary to operate in a very limitedspace, so as to leave the decks more free and clear for the carrying oflumber and other deck loads, and as an auxiliary to the ordinaryhand-lever and crank pumping-apparatus.

The apparatus is illustrated in the accompanying drawings.

Figure 1 is a perspective view of a ships main two-cylinder pump, towhich my improvement is applied. Fig. 2 is a view of one of thefoot-rests as bolted on the pumping-lever beam with clamps c c. Fig. 3is a partial view of a foot-rest, provided with a wrist-pin forconnecting-rod h. Fig. 4 shows the foot-rest cast on the lever-beam c,and is provided with a wrist-pin for the connecting-rods h. Fig. 5 showslever-beam 0 provided with pin k, but no foot-rest. Fig. 6 shows thefoot-rest connection provided with a center pivot. It also illustratesthe attachment of the connectingrod beyond the foot-rest. Fig. 7illustrates one form of connectingrod, and others are shown in Figs. 1and 6. Fig. 8 shows the footrest provided with an arch to span the foot,which may be used with or without the flange a.

The foot-rests b are provided with a comparatively level seat for thefoot, and a flange standing up on the outer edge, to prevent the footfrom slipping off the outer end. They may also be provided with an archor strap, Z, to pass over the foot, as see Fig. 8, with or without theflange. If preferred, the connectingrods may terminate at the bottom ina stirrup for the foot, and then be connected by a rod, 1', withoutother foot rests. This will keep the foot always level. The foot-restabove the lever-beam 6 also may be pivoted to the lever-beam, and keptlevel by the foot restin g upon it, or by a pendulous weight attached toit.'

The foot-rest a may be cast on the leverbeam, as shown in Fig. 4, or maybe clamped on, as shown in Fig. 2, or otherwise bolted on, but in thesecases will, of course, not preserve its level, but will oscillate withthe lever-beam, which, being simple, will serve a good purpose.

These foot-rests b a are used directly on the lever-beam by a manstanding on them and throwing his weight first on one foot and then onthe other, meanwhile holding on to some stationary object to steady hisbody. A handle for this purpose is shown at f, and may be attached tosome stationary part of the pump or the deck. One or more pairs of theauxiliary foot-rests 9 (shown in Fig. 1) may be used in connection withfoot-rests b a, or independently. v

In Fig. 1 the auxiliary foot-rests are shown suspended, with theirconnection i, by the rods h, from suitable wrist-pins attached to thelever-beam, and are guided, to prevent their swinging, by suitableguides, as j. The con necting-bar i may be pivoted, if preferred, in thecenter, as shown in Fig. 6.

It will be observed that one man may work the pump or pumps by standingon foot-rests b, or on either pair of footrests g, and the pumps may beprovided with either one pair above the lever, or one or more below, orall; and they may be used'auxiliary to or independently of the ordinaryhand-levers, sockets for which appear in the lever-beam.

One of the advantages of the foot-rests b a is, that while it iselevated, so as to protect the operators feet in some degree fromexposure to the water, its construction is such as to allow any waterlodging upon it to flow off at the end. This construction, with open endand flange a, gives the best facility for clearing it from ice. Forthese purposes the sandals and foot-rests ordinarily used upon treadlesare not well adapted, and are, therefore, unfit to be used on shipboardin icy weather, for which use this improved apparatus is speciallyadapted. These advantages are found in the foot-rests 9 also, which aresimilarly constructed.

I claim-- FFICE.

1. The foot-rest or sandal, constructed with detachable foot-rest I),the lever-beam e, and open end, and provided at the outer edge withfoot-rest g, substantially as described. the flange a, the same beingattached trans- 4. The combination of the foot-rest I), clamps verselyto the pumping-beam e in pairs, with 0, bolt (1, and the lever-beam e,substantially the flanges at the farther sides, all substan as shown.tially as and for the purposes set forth.

2. The foot-rest g, rods h, and connection 6, D ID COFFD" in combinationwith the pumping lever or beam 'Witnesses: e, substantially asdescribed. L. BURNETT,

3. The wrist-pin k, in combination with the M. H. BROWN.

